Originally Posted by DCBob

Thank God some of us live near IAD and never have to deal with this problem. But you could just exit the airport by taking the Aerotrain to the Main Terminal and then re-entering the secure area through the TSA pre-check lane. That lane rarely has more than 2 people in it (except during the Monday morning rush) and has never taken me more than 60 seconds to pass through. The elapsed total extra time to do this would be about 15-20 minutes, but never 40 minutes (unless you fly in to IAD on Monday morning).